Hal-hal yang wajib dipahami oleh seorang web programmer

Melihat dan meriset begitu banyak calon programmer yang terlahir, bahkan skrg lulusan SMK komputer pun sudah bs membuat program, sy akan menshare apa saja yg wajib dipahami oleh seorang programmer, khususnya programmer Web. Karena berhubung sy jg fokus ke Web yg kelebihannya mudah dicustomize dan didevelop. Nah apa saja kira - kira  hal yang wajib diketahui oleh seorang programmer Web agar kita menjadi profesional dan menambah kepercayaan client. silahkan perhatikan informasi berikut :

Auth
-simple (Access Control List)
-advanced (Role Based Access Control)
-hand made Authentication

Caching
-DB Caching
-File Caching
-Mem Caching
-Image Caching

Console
-Cron Job
-CodeGenerator
-DocsGenerator
-ShellCommand

Database(Model)
-Structural Query Language Statement
-Active Record
-Object Relational Mapping (ORM)
-Validation
-Behaviour
-Direct Access Object (DAO)
-Database Migration
-QueryBuilder

Internationalization
-Language
-Localization (Number, Currency, datetime format)
ErrorHandling
-WebServerError
-PHPerror
-DatabaseError
-AjaxError
-ApplicationError

FileSystem
-Upload (single, multi)
-Download
-Pdf, Excel, Doc

Logging
-SQL Statement Logging
-User Activity Log, Audit Trail
-Error Message
-Profiling

Communication
-Mail
-SMS
-Notification
-Really Simple Syndication

Networking
-File Transport Protocol
-Geo-Colocation
-Routing
-Domain, IP Address
-User Agent
-Zip Encoding
-Template Engine
-Trackback
-Search Engine Optimizer

Security
-Encryption
-Random Generator
-Bad Words
-Sanitizer
-Session
-SQL Injection
-XSS
-CSRF
-Cookies Tempering
-Captha

WebServices
-Simole Object Access Protocol (SOAP)
-XML-Remote Procedure Call (RPC)
-Access Protocol Interface (API)
-Representation State Transfer (REST)

Developer Helper
-Versioning Control System (VCS)
-Debugging
-Unit Testing
-Design Pattern
-Hacking

Other
-Analytics
-Importing
-Reporting

Basic Client Side
-HTML, Form, Tabel
-Cascade Style Sheet (CSS)
-JavaScript, Jquery, JqueryUI
-Flash
-Less
-Ansynchronous JavaScript and XML (AJAX)
JqueryUI like widget
-Accordion
-Autocomplete
-Button
-Datepicker, datetimepicker, monthpicker
-Dialog
-Menu
-Progressbar
-Slider
-Spinner
-Tabs
-Tooltip Widget
-TreeView
-Sidebar
-Breadcrumb
-NewsTicker
-TextEditor
-Masking
-pagination
-Wizard
-Picker
-DropDown
-Scroll
-Highlight
-Tabular Input
-Chat
-Uploader
-Downloader
-Theming

Image Related
-Slider, Carousal
-Charts
-Thumbnail
-Manipulation. Cropping, Zooming, Resizing
-Icon
-Smiley
-loading, Busy
Multimedia
-Sound
-Video
-3D